Table 2.
Effects of N application on water consumption amount, its percentage to total water consumption amount and water consumption per day of winter wheat at different growth stages.
| Treatment | Wintering stage | Jointing stage | Anthesis stage | Maturity stage | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CA (mm) |
CP (%) |
CD (mm) |
CA (mm) |
CP (%) |
CD (mm) |
CA (mm) |
CP (%) |
CD (mm) |
CA (mm) |
CP (%) |
CD (mm) |
||
| 2020–2021 | N0 | 81.34 bc | 20.60 b | 1.03 d | 129.76 c | 32.87 cd | 0.82 c | 27.92 c | 7.07 c | 0.96 c | 155.79 ab | 39.46 a | 3.80 ab |
| N90 | 139.49 a | 33.42 a | 1.77 a | 81.49 e | 19.52 f. | 0.51 e | 36.91 bc | 8.84 bc | 1.27 bc | 159.55 a | 38.22 a | 3.89 a | |
| N180 | 121.13 a | 29.18 a | 1.53 b | 95.99 d | 23.12 e | 0.60 d | 57.75 a | 13.91 a | 1.99 a | 140.23 c | 33.78 b | 3.42 c | |
| N210 | 95.77 b | 22.61 b | 1.21 c | 145.66 b | 34.39 bc | 0.92 b | 50.20 ab | 11.85 ab | 1.73 ab | 131.89 c | 31.14 bc | 3.22 c | |
| N240 | 97.69 b | 20.70 b | 1.24 c | 178.99 a | 37.92 a | 1.13 a | 59.34 a | 12.57 ab | 2.05 a | 135.96 c | 28.81 c | 3.32 c | |
| N270 | 68.33 c | 16.06 c | 0.86 e | 156.86 b | 36.88 ab | 0.99 b | 59.06 a | 13.88 a | 2.04 a | 141.08 bc | 33.17 b | 3.44 bc | |
| N300 | 80.58 bc | 20.25 b | 1.02 de | 126.36 c | 31.75 d | 0.79 c | 57.14 a | 14.36 a | 1.97 a | 133.89 c | 33.64 b | 3.27 c | |
| 2021–2022 | N0 | 72.56 bc | 19.17 d | 0.92 bc | 140.71 ab | 37.17 a | 0.88 ab | 57.70 cd | 15.24 cd | 1.99 cd | 107.63 d | 28.43 b | 2.63 d |
| N90 | 80.17 b | 19.32 cd | 1.01 b | 130.74 bc | 31.51 bc | 0.82 bc | 73.03 b | 17.60 bc | 2.52 b | 130.96 b | 31.56 ab | 3.19 ab | |
| N180 | 62.25 c | 14.76 e | 0.79 c | 145.93 ab | 34.59 ab | 0.92 ab | 92.17 a | 21.85 ab | 3.18 a | 121.51 cd | 28.80 b | 2.96 bc | |
| N210 | 97.50 a | 22.84 bc | 1.23 a | 117.03 c | 27.42 c | 0.74 c | 68.99 bc | 16.17 cd | 2.38 bc | 143.29 a | 33.57 a | 3.49 a | |
| N240 | 36.70 d | 9.00 f. | 0.46 d | 154.24 a | 37.83 a | 0.97 a | 94.18 a | 23.10 a | 3.25 a | 122.56 c | 30.06 b | 2.99 bc | |
| N270 | 97.30 a | 25.72 ab | 1.23 a | 112.09 c | 29.63 c | 0.70 c | 53.25 cd | 14.08 de | 1.84 de | 115.66 cd | 30.57 ab | 2.82 cd | |
| N300 | 98.12 a | 26.20 a | 1.24 a | 114.04 c | 30.45 bc | 0.72 c | 44.01 d | 11.75 e | 1.52 e | 118.39 cd | 31.61 ab | 2.89 bcd | |
| F-value | |||||||||||||
| Year (Y) | ** | ** | ** | ** | ** | * | * | * | * | * | * | * | |
| Nitrogen (N) | ** | ** | ** | ** | ** | ** | ** | ** | ** | ** | ** | * | |
| Y × N | ns | ns | ns | ** | ** | ns | ns | ns | ns | * | ns | ns | |
The different letters indicates the significant difference on the level of P < 0.05. CA, amount of water consumption; CP, percentage of CA to total water consumption; CD, daily water consumption. Different normal letters after the same column of numbers indicate that different sowing rates have significant differences at the level of 0.05 (LSD test). Different capital letters after the same column of numbers indicate that different years have significant differences at the level of 0.05 (LSD test). * Significant at the 0.05 probability level. **Significant at the 0.01 probability level.